Traction-wheel



(No Model.) v

W. M. BEINDORF.

TRAGTION WHEEL.

Patented Sept'. 2, 1884.

IlNrrnn Sterns arirvr trice..

WILLIAM M. BEINDORF, OF LITGHFIELD, ILLINOIS.

TRAcTloN-wHl-:EL

SPECIFICATION forming part of Letters Patent No. 304,598, datedSeptember 2, 1884.

Application filed June 19, 1854.

To all whom, zit may concern,.- 4

Be it known that LWILLIAM M. BEINDORF, a citizen of the United States,residing at Litchiield, in the county of Montgomery and State ofIllinois, have invented certain new and useful Improvements inTractioirWheels; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and iiguresof re erenee marked thereon, which form a part of this specification.

Theinvention relates to that class of wheels in which the necessaryamount of traction is obtained by pins projecting outward from thecircumference of the wheel; and it consists in making the tractionpinsradially adjustable upon the wheel by connecting theirinner ends with aneccentric-ring surrounding an eccentrie-cam attached over the hub of thewheel, which cam may be rotated by proper mechanism fixed to themachine.

In the drawings accompanying and forming part of this specification,Figure l represents an end View of a machine with the inventionattached, the parts broken away on one side to show the attachment ofthe eccentric-ring and pins. Fig. 2 is a View ot' one wheel witheccentric and pins att-ached, and Fig. 3 is a detail View of thegear-wheel and cam that carries the eccentric-ring.

In the accompanying drawings, A A represent the wheels of atraction-1nachine turning on the axle a, each of which wheels has acircumferential flange, a', extendinginward from its rim, and providedwith proper Vholes at equal distances apart for the radial tractionpinsto pass through.

a2 is a sleeve liXed over and bolted to the axle a, and c3 a3 aresimilar arms depending from the axle, which is iixed through their upperends, having the sleeve a2 situated between them.

tis arod uniting the lower ends of the arms c3 a?, lying parallel to theaxle mand provided a short distance within one of the arms a3 with aproper worm-wheel, c5, as shown in Fig. l.

a is a vertical shaft, provided at its upper (No model l itin itscentral bearing, a?, formed in a proper rearward projection on thesleeve a2 and vertically above the worm-wheel.

a8 is a worin on the lower end of the shaft a, by means of which andsaid rod the worm-wheel a5 is rot-ated. p

B B are similar pinions on each end of the rod c* outside the dependingarms,and meshed with similar gear-wheels, C C, fitted on the inner endsof the hubs, as shown in Fig. l. Each gear-wheel C has on its innersurface the circular eccentric-cainD, as shown in Fig. 3. Vhile thegear-wheels C lit tightly enough on the hubs to rotate with the wheels,their position may be changed, if desired, by means of the describedpinions and the worm-wheel and actuating-shaft a6. rlhe cams aresituated exactl y opposite each other, and are rotated equally by thepinions B and wheels C.

E E are rings, each of which surrounds one of the cams D, and isreciprocated by its rotation. i

F F are the radial pins, of any proper crosssection, but preferably madeangular, so as to take betterhold` of the ground over which the wheelpasses. The pins F on each side 'pass into and through the holes intheflange a, and have their inner ends pivoted to the outer ends of thelinks ff, the inner ends of which are pivoted at equal distances apartto the ring E, situated on the same side, as shown in Fig. 2. The hubsof the wheels, it will be seen, are formed with inwardly-projecting eX-tensions A, which are adapted to serve as bearings and supports for thecams or eccentrics presently described. By this construction I supportthe cams or eecentrics on the wheel proper, and thus adapt the wheel forapplication to any of the usual forms of traction-engines, as will beunderstood.

The wheels may be rotated by any desired means, such as chains orgearwheels. G shows such a gear proper attachedv to one wheel A. Thisgear G is project-ed laterally from an annularplate, G', which issecured to the spokes of the wheel A. The teeth y of gear-wheel G areformed nearthe edge of same, and between the teeth and the plate G', Iform slots G2 through the wheel G, `i'or the passage of the links f,which connect pins F and ring end with aproper horizontal handle torotate IOI) E. These slots are elongated slightly in a eircumferentialdirection,so as to permit a slight play ot' the links in such direction.rlhis is advantageous in that it permits a slight play of the linksdesirable in the movement of the eccentric before described, and yet itprevents the rotation of the eccentric-ring, as will be understood.

If it is not desired to use the pins, they are drawn in from the pointsof contact of the wheels with the ground by means of the pinions B B anddescribed actuating mechanism, and the revolution of the wheels willthen, by means of the gear-wheels B B, continually draw them in as thewheels come with contact with the grounds at successive points. It isevident that the pins can, by the same means, be adjusted to anydistance of their length out or' the opening in the flanges a. when thewheels and ground come in contact, and that the revolution ot' thewheels will bring the following arms successively as i'ar out.

\Vl1ilc I prel'erlhc construction shown and before described, it ismanifest many modiiications or slight variations may be made withoutinvolving a departure from the broad principles of my invention. Forinstance, the eccentric I) might be formed independently oi" the gear C,and be rotated by hand to secure the desired adjustment. Instead ot'arranging said eccentric on the inner side ofthe wheel, it might besecured on the outer side of same, being properly secured on the end ofthe spindle. Instead of making such eccentric or' the circularcontourshowmit might be made of other suitable cam shape, the ring orcarrier E being conformed to such desired shape. It is also manifestthat the cam might be made with an eccentric-flange or lateral shoulderoperating in the guide D on the l'ra1ning,which in such case would besuitably formed to receive such eccentric. In case the eccentric isrevolved by hand it would be desirable 'to employ a clamping set-screwor other wellknown expedient to secure it at any point to which it maybeadjusted. These slight modiiications will involve nc departure from thebroad principles of my invention, though I prefer to employ the devicesand construction as shown and before more fully described.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

I. A traction-wheel having pins projected at intervals through andmovable beyond the rim, a ring,and links connecting said pins and ring,and having its hub extended at A inward, and adapted to serve as abearing for the eccentric, and the eccentric journaled on the extensionA 0i' the hub, and provided with a gear ring or wheel suited to beengaged by a proper gear on the framing, substantially as set forth.

2. The combination, with the wheel, the eccentric secnred ou theframing, the ring E, and pins F, of the wheel G, secured to the spokesmidway the hub and telly, and provided with slots g, and the links f,passed through slots g, and pivotally secured at their opposite endstothe pins and ring E, substantially as and 'for the purposes specified.

In testimony whereof l aiiix my signature in presence of two witnesses.r

\VILLIAM M. BEINDOR-F.

Witnesses:

C. ZINCK, THEO. Lonscnrln.

